JP2018072708A - Keyboard instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a keyboard instrument capable of smoothly expressing the approaching timing of key depression.SOLUTION: The electronic keyboard musical instrument 1 decreases the light amount of a first announcement lamp 41 and turns off the light while increasing the light amount of a second announcement lamp 42 during the period from before three beats to two beats before the key depression timing. The electronic keyboard musical instrument 1 likewise turns on/off the second announcement lamp 42, a third announcement lamp 43, and a key depression instruction light 44 in the period until the key depression timing. As a result, the lighting switching in the adjacent two indicator lights is gradually performed in accordance with the elapsed time, so that it is possible to smoothly express the approaching timing of key depression.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a keyboard instrument.

  2. Description of the Related Art Conventionally, there is a keyboard instrument that gives an instruction for pressing a key using a display means. For example, Patent Document 1 discloses a performance support apparatus that includes a key pressing instruction LED for instructing key pressing and a notice display LED for notifying a key to be pressed corresponding to each key. According to such a configuration, since the notice display LED is lit before the key pressing instruction LED is lit, the performer can know in advance the key to be pressed next.

JP 2000-132163 A

  By the way, it is conceivable to increase the number of the notice display LEDs when, for example, it is desired to start the notice from an early time with respect to the timing when the key should be pressed. By sequentially lighting the plurality of notice display LEDs, it is possible to express a state in which the timing to press the key is approaching. However, in the case of sequentially lighting up, simply displaying a plurality of notice display LEDs in sequence does not provide a smooth display.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a keyboard instrument that can smoothly express a state in which the timing to press a key approaches.

  (1) A keyboard instrument according to the present application includes a keyboard, three or more light emitting means corresponding to each key of the keyboard, and a control means. The control means is a timing at which a key should be pressed based on performance information. Prior to the above, among the three or more light-emitting means that are turned off, switching processing for switching the light-emitting means to be turned on by sequentially blinking from the light-emitting means that is far from the keyboard toward the light-emitting means that is closer to the keyboard And at least one of turning off the light emitting means and turning on the light in the switching process, the light quantity of the light emitting means is changed according to the elapsed time. In this way, it is possible to express continuously from lighting to extinguishing, or from extinguishing to lighting, so that it is possible to smoothly express how the timing to press the keys approaches.

  (2) Further, in the switching process, the control unit is turned off by decreasing the light amount of the light emitting unit, and is turned on by increasing the light amount of the light emitting unit adjacent to the keyboard side of the light emitting unit. To do. In this way, since switching of lighting in the two adjacent light emitting means is gradually performed according to the elapsed time, it is possible to smoothly represent the manner in which the timing to press the key approaches.

  According to the keyboard musical instrument according to the present application, it is possible to provide a keyboard musical instrument that can smoothly represent a state in which the timing to press a key approaches.

It is a front view of the electronic keyboard instrument which concerns on embodiment. It is an enlarged view of a guide display and a keyboard. It is a block diagram which shows the electric constitution of an electronic keyboard instrument. This is a musical score in which music data is expressed in a musical score format. It is a timing diagram explaining the transition of lighting of the guide display in the embodiment. It is a timing diagram explaining the transition of lighting of the guide display in an aspect different from the embodiment. It is a figure explaining transition of lighting of a guide display in a mode different from an embodiment and an embodiment. It is a functional block diagram in connection with the lesson function of an electronic keyboard instrument.

<Configuration of keyboard instrument>
The configuration of the electronic keyboard instrument 1 having a lesson function will be described with reference to FIG. The electronic keyboard instrument 1 includes a housing 1a, a keyboard 10, a user interface 12, speakers 151, 151, and the like. The keyboard 10, the user interface 12, and the speakers 151 and 151 are disposed on the front surface of the housing 1a. The keyboard 10 includes a plurality of white keys 10a and black keys 10b corresponding to pitches. In the following description, the direction in which the keys of the keyboard 10 are arranged is referred to as the left-right direction, and the direction orthogonal to the left-right direction in front view is referred to as the front-rear direction. The user interface 12 and the speakers 151 and 151 are arranged on the rear side of the keyboard 10. The speakers 151 and 151 emit sounds corresponding to operations accepted by the keyboard 10. The user interface 12 includes a liquid crystal display 121, the same number of guide displays 40 as the keys of the keyboard 10, and a plurality of operation buttons (not shown). The liquid crystal display 121 is arranged at the approximate center in the left-right direction, and displays a setting screen and the like. The guide display 40 is arranged in the vicinity of each key corresponding to each key on the keyboard 10. The operation buttons include a power button and a “start / stop” button. In FIGS. 1 and 2, only one of the plurality of white keys 10a, black keys 10b, and guide display 40 is given a reference numeral, and the other reference numerals are omitted.

  The guide display 40 will be described in detail with reference to FIG. The guide display 40 includes a first warning light 41, a second warning light 42, a third warning light 43, and a key pressing instruction light 44. A part of the housing 1a is formed with a rectangular permeable sheet corresponding to each of the first warning light 41 to the third warning light 43 and the key pressing instruction light 44, and the inside of the permeable sheet of the housing 1a. An LED (Light Emitting Diode) (not shown) is arranged on the side. The permeable sheet is a sheet having permeability. The emission color of the LED is, for example, red. When the LED is turned on, the performer can visually recognize the light emitted by the LED that has passed through the transmissive sheet. Here, the respective configurations including the transmissive sheet and the LED are referred to as a first warning light 41 to a third warning light 43 and a key pressing instruction light 44. In the following description, the first warning light 41 to the third warning light 43 and the key pressing instruction light 44 may be collectively referred to as a display light.

  The first warning light 41 to the third warning light 43 light up prior to the key pressing timing to be pressed by the performer, thereby notifying the key press. The key pressing instruction lamp 44 is turned on at the key pressing timing to instruct key pressing. Each of the permeable sheets constituting the first warning light 41 to the third warning light 43 and the key pressing instruction light 44 has the same rectangular shape in front view.

  Next, the electrical configuration of the electronic keyboard instrument 1 will be described with reference to FIG. In addition to the configuration shown in FIG. 1, the electronic keyboard instrument 1 includes a detection circuit 11, a sound source circuit 13, an effect circuit 14, a sound system 15 having speakers 151 and 151, a CPU 16, a timer 31, a RAM 18, a ROM 19, and a data storage unit. 20, a network interface 21 and the like. The CPU 16 controls each unit by executing various programs stored in the ROM 19. Here, each unit includes the detection circuit 11, the user interface 12, the sound source circuit 13, and the network interface 21 that are connected to the CPU 16 via the bus 22. The RAM 18 is used as a main storage device for the CPU 16 to execute various processes. The data storage unit 20 stores music data in the MIDI (Musical Instrument Digital Interface; registered trademark) format. The data storage unit 20 is realized by, for example, a flash memory. The timer 31 counts the time until the set time and the time between music data events (described later) according to the command of the CPU 16 and outputs a performance signal such as a key pressing signal to the CPU 16 when the remaining time becomes zero.

  The detection circuit 11 detects the movement of the keyboard 10 to generate a performance signal (key press signal, key release signal, speed signal, etc.), and is input to the sound source circuit 13 via the CPU 16.

  The tone generator circuit 13 generates and outputs a digital audio signal in accordance with a performance signal such as a key depression signal. The effect circuit 14 outputs a digital audio signal obtained by adding an effect such as reverb to the audio signal output from the sound source circuit 13. The sound system 15 includes a digital-analog converter and an amplifier (not shown). The digital-analog converter converts the digital audio signal output from the effect circuit 14 into an analog audio signal and outputs the analog audio signal to the amplifier. The amplifier amplifies the analog audio signal and outputs it to the speakers 151 and 151. The speakers 151 and 151 sound according to the input analog audio signal. In this way, the electronic keyboard instrument 1 generates a performance sound in response to the operation of the keyboard 10. In addition, an automatic performance sound is generated based on the music data stored in the data storage unit 20. Hereinafter, the sounding of the automatic performance sound may be described as playback.

  The user interface 12 displays various setting screens, for example, on the liquid crystal display 121 in accordance with instructions from the CPU 16. Further, the user interface 12 transmits an operation received by the operation button to the CPU 16 as a signal. Further, the user interface 12 blinks each of the LEDs constituting the first warning light 41 to the third warning light 43 and the key pressing instruction light 44 according to a command of the CPU 16. The network interface 21 performs LAN communication. The CPU 16 is connected to the Internet via the network interface 21 and a router (not shown), and can download music data from a content server that provides music data connected to the Internet.

<Summary of lesson function>
Next, the lesson function of the electronic keyboard instrument 1 will be described with reference to FIGS. Here, it is assumed that one measure of a musical score 60 in which music data used for a lesson is expressed in a musical score format is configured as shown in FIG. The time signature of the score 60 is four quarters. In one measure of the musical score 60, a note n1, which is a quarter note, a note n2, n3, which is an eighth note, and notes n4, n5, which are quarter notes, are arranged in this order. In FIG. 5, the time is 0 for the key depression timing of the note n1. Further, in FIG. 5, the period during which the first warning light 41 to the third warning light 43 and the key pressing instruction light 44 are lit is indicated by a rectangle. The first warning light 41 to the third warning light 43 and the key pressing instruction light 44 can be turned on with four levels of light quantity Q1 to Q4. The magnitude of the light quantity is in the order of Q1 <Q2 <Q3 <Q4. In FIG. 5, the light quantities Q1 to Q4 are indicated by different hatching.

As shown in FIG. 5, the electronic keyboard instrument 1 starts to reproduce the music data. When three beats before the key depression timing of the note n1, the first warning lamp 41 is lit with the light quantity Q4, and the three beats of the key depression timing. In the period from the front to the key pressing timing, the first warning light 41 to the third warning light 43 and the key pressing instruction light 44 corresponding to the note n1 are connected to the keyboard 10 from the first warning light 41 which is far from the keyboard 10. Are displayed in the order of the direction toward the key-indicating lamp 44 having a short distance. Specifically, the electronic keyboard instrument 1 lights the first warning lamp 41 of the note n1 with a light quantity Q4 three beats before the key depression timing of the note n1. Next, after 1/4 beat, that is, 2.75 beats before the timing of key pressing, the electronic keyboard instrument 1 switches the light quantity of the first warning light 41 to the light quantity Q3, and the second warning light 42 lights up with the light quantity Q1. To do. Further, when 2.5 beats before the key depression timing after 1/4 beat, the electronic keyboard instrument 1 switches the light quantity of the first warning lamp 41 and the second warning lamp 42 to the light quantity Q2. Further, at 2.25 beats before the key depression timing after 1/4 beat, the electronic keyboard instrument 1 switches the light quantity of the first warning lamp 41 to the light quantity Q1, and switches the lighting of the second warning lamp 42 to the light quantity Q3. Furthermore, when it becomes 2 beats before the key pressing timing after 1/4 beat, the electronic keyboard instrument 1 turns off the first warning lamp 41 and switches the lighting of the second warning lamp 42 to the light quantity Q4.
That is, during the first beat, the first warning light 41 changes from the lit state to the unlit state, and the second warning light changes from the unlit state to the lit state.

  Thereafter, in the same manner, the electronic keyboard instrument 1 changes the lighting state from the on state to the off state by gradually reducing the amount of light of the second warning lamp 42 in the period from 1 beat to 2 beats before the key pressing timing. Then, the light amount of the third warning lamp 43 is increased stepwise to change from the unlit state to the lit state. Next, in the period from one beat before the key pressing timing to the key pressing timing, the electronic keyboard instrument 1 gradually decreases the light amount of the third warning lamp 43 while gradually decreasing the light amount of the key pressing instruction lamp 44. Do more. At the key pressing timing, the electronic keyboard instrument 1 turns off the third warning lamp 43, switches the light quantity of the key press instruction lamp 44 to the light quantity Q4, and turns it on. Next, the electronic keyboard instrument 1 turns off the key press indicator 44 when one beat has elapsed from the key press timing. As described above, the electronic keyboard instrument 1 can increase and decrease the amount of light from turning on to turning off and turning off to turning on according to the elapsed time. Can be expressed. Further, the electronic keyboard instrument 1 gradually switches on lighting of two adjacent indicator lights such as the first warning light 41 and the second warning light 42 according to the elapsed time, so that one of them is gradually brightened. However, since the other is gradually darkened, it is possible to smoothly express how the timing to press the keys approaches.

  Also for the guide display 40 corresponding to the notes n2 to n5, the electronic keyboard instrument 1 is similarly lit from 3 beats before each key press timing to 1 beat after the key press timing. The electronic keyboard instrument 1 lights up as described above for all of the guide displays 40 corresponding to the keys of the keyboard 10. By looking at the first warning light 41 to the third warning light 43 and the key pressing instruction light 44 that are sequentially lit, the performer can follow the key to be pressed as the music progresses. Further, the key pressing timing can be recognized by the lighting of the key pressing instruction lamp 44.

  Incidentally, as shown in FIG. 4, the note n3 which is a quarter note and the note n2 which is an eighth note are arranged in front of the note n3. Therefore, as shown in FIG. 5, the first notice of the note n3 is made. The timing of starting the lighting of the lamp 41 is 1.5 beats before the key pressing timing of the note n1. Therefore, in the case where the light quantity of the indicator lamp is not changed in a stepwise manner as in the present embodiment, but the indicator lamp has only two states of turning on and off, the pressing on the note n3 and the note n2 is performed. The timing which cannot express the time difference to key timing will occur. Next, it will be described with reference to FIGS.

  In the electronic keyboard instrument 1, as shown in FIG. 6, a method of lighting the indicator lamp only with the light quantity Q4 is also conceivable. More specifically, this method first turns on the first warning lamp 41 corresponding to the note n1 with the light quantity Q4 three beats before the key pressing timing of the note n1. Next, when two beats before the key depression timing of the note n1, the first warning light 41 is turned off and the second warning light 42 is turned on with a light quantity Q4. Thereafter, similarly, the indicator lamps that are lit at the timing of one beat before the key pressing timing of the note n1, the key pressing timing, and the timing after one beat of the key pressing timing are the second warning lamp 42, the third warning lamp 43, and the pressing key. This is a method of switching in the order of the key indicating lamp 44. As in FIG. 5, the time for pressing the note n <b> 1 is set to 0 for the time in FIG. 6. Hereinafter, this method is referred to as pattern B, and the display method of the present embodiment is referred to as pattern A.

  In the case of pattern B, the key press timing of the note n3 is 1.5 beats before the key press timing of the note n1, so that it corresponds to the guide display 40 corresponding to the note n3 and the note n2 which is the note immediately before the note n3. The period when the guide display 40 to be displayed becomes the same will occur. For example, the lighting state of the guide display 40 at time t1 in FIG. 6 is as shown in the display 100 in FIG. The display 100 shows the guide display 40 corresponding to each of the notes n1 to n5 in order from the right, and the indicator light that is lit with the light quantity Q4 is shown in black. At time t1, the third warning lamp 43 corresponding to the note n2 and the third warning lamp 43 corresponding to the note n3 are turned on. Thus, since the display state is the same in the guide display 40 corresponding to the note n2 and the guide display 40 corresponding to the note n3, the player performs the key corresponding to the note n2 and the note n3 at time t1. It becomes impossible to determine which key should be pressed first.

  On the other hand, according to the pattern A of the present embodiment, the lighting state of the guide display 40 at time t1 in FIG. 5 is as shown by the display 70 in FIG. The display 70 shows the guide display 40 corresponding to each of the notes n1 to n5 in order from the right, and the lighted indicator lights are hatched. Similarly to FIG. 5, the light quantities Q1 to Q4 are indicated by different hatching. Moreover, the time t1 in FIG. 5 and the time t1 in FIG. 6 indicate the same time, and are 0.875 beats after the key depression timing of the note n1 (between 3/4 beat and 4/4 beat). . In the guide display 40 corresponding to the note n2, the third warning lamp 43 is lit with the light quantity Q1 and the key pressing instruction lamp 44 is lit with the light quantity Q3, whereas in the guide display 40 corresponding to the note n3, 3 The warning light 43 is lit with a light quantity Q3, and the key pressing instruction lamp 44 is lit with a light quantity Q1. Thus, since the display state is different between the guide display 40 corresponding to the note n2 and the guide display 40 corresponding to the note n3, the performer corresponds to the key corresponding to the note n2 at the time t1. It can be determined that the key should be pressed before the key to be pressed. In this way, even when the musical notes n2 and n3, which are notes having a length shorter than one beat, which is a period during which one indicator lamp is lit, are included in the music, they are shorter than one beat. Since the amount of light changes at intervals of 0.25 beats, the time until the key pressing timing of each note can be expressed in detail. Even in the case of notes n3 and n4 where the key press start timing is one beat (quarter note) or less, the light intensity is changed at intervals of less than one beat, so that the key press order can be expressed. is there.

<Music data>
Next, music data will be described. The music data includes music information and a plurality of tracks. The music information includes information such as the music name of the music data. In the track, data in which time information and events are configured as one set is arranged in the order of progression of the music. An event is data for instructing the content of processing. The time information is data indicating the time for processing the event. Of the plurality of tracks, one track contains lesson data, and the other tracks contain accompaniment data. Events include MIDI events “Note On” and “Note Off”, and Meta Events “Guide Display On” and “Guide Display Off”. Note that “guide display on” and “guide display off” are included in the lesson track.

“Note on” is data instructing sound generation, and “note off” is data instructing mute. “Note number”, “velocity”, and the like are attached to “note on” and “note off”. The “note number” is data for designating the pitch, and the “velocity” is data representing the strength of the sound. “Guide display ON” and “Guide display OFF” are data for turning on / off the guide display 40. “Guide number on” and “Guide display off” are accompanied by “note number” or the like. The time information corresponding to “guide display ON” is set three beats before the corresponding key pressing timing. An end code is included at the end of the track.
<Functional block>
Next, functional blocks related to the lesson function of the electronic keyboard instrument 1 will be described with reference to FIG. The electronic keyboard instrument 1 includes a reading unit 51 and an LED control unit 52 in addition to the configuration described above. The reading unit 51 and the LED control unit 52 are realized, for example, when the CPU 16 executes a program stored in the ROM 19.

  When a performer who wants to use the lesson function operates the user interface 12 to select desired music data, the CPU 16 reads the designated music data from the data storage unit 20 and stores it in the RAM 18. The performer who wishes to start the lesson function presses the “start / stop” key of the user interface 12.

  When the reading unit 51 determines that the “start / stop” key is pressed according to a signal from the user interface 12, the reading unit 51 starts the reading process. When the reading process is started, the reading unit 51 sequentially reads time information and events included in the track of the music data stored in the RAM 18 from the beginning, and uses the timer 31 to respond to the event at a timing according to the time information. The command is output to the LED control unit 52 and the sound source circuit 13. If the event is “note-on” or “note-off”, commands “note-on” and “note-off” are output to the tone generator circuit 13. The tone generator circuit 13 and the effect circuit 14 perform signal processing according to the input “note-on” and “note-off” commands and accompanying “note number”, “velocity”, and the like. As a result, an accompaniment sound is generated from the sound system 15.

  If the event is “Guide display on” or “Guide display off”, the reading unit 51 outputs the commands “Guide display on” and “Guide display off” to the LED control unit 52. The LED control unit 52 starts the switching process when a “guide display on” command is input. When starting the switching process, the LED control unit 52 first instructs the user interface 12 to turn on the first warning light 41 of the guide display 40 corresponding to the accompanying “note number” with the light quantity Q4. Next, when the timer 31 is used and it is determined that the elapsed time after the lighting of the first warning light 41 is instructed to be a time corresponding to 0.25 beat (1/4 beat), the first warning light 41 Is switched to the light quantity Q3, and the user interface 12 is instructed to light the second warning lamp 42 with the light quantity Q1. Thereafter, the LED control unit 52 similarly instructs the user interface 12 to turn on / off and the amount of light every time corresponding to 0.25 beats until a “guide display off” command is input. When an instruction of “Guide display OFF” is input, the LED control unit 52 instructs the user interface 12 to turn off the key press instruction lamp 44 and starts the switching process.

  Note that the reading unit 51 ends the switching process when it is determined that the “start / stop” key is pressed and when the end code of the music data is read.

  In the above description, the LEDs constituting the first warning light 41 to the third warning light 43 and the key pressing instruction light 44 are an example of light emitting means. The CPU 16 is an example of a control unit. The music data is an example of performance information.

As mentioned above, according to embodiment described, there exist the following effects.
The LED control unit 52 realized by the CPU 16 executing a program or the like causes the first warning light 41 to the third warning light 43 to sequentially blink before the key pressing timing based on the music data, and the key pressing timing. Then, a switching process for turning on the key pressing indicator light 44 is executed. For example, the LED control unit 52 decreases the light amount of the first warning light 41 and turns it off, while increasing the light amount of the second warning light 42 and turns it on. As a result, switching of lighting in the two adjacent indicator lamps is gradually performed according to the elapsed time, so that the timing at which the key should be pressed approaches in order to gradually darken the other while gradually brightening one. It can be expressed smoothly.

[Modification]
Needless to say, the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the spirit of the present invention.
In the above description, for example, the light amount of the first warning light 41 is decreased and turned off, while the light amount of the second warning light 42 is increased and turned on. However, the present invention is not limited to this. A configuration may be employed in which only the amount of light for lighting is changed according to the elapsed time. For example, in FIG. 5, the first warning light 41 is lit with a light quantity Q4 for a period of 3 to 2 beats before the key pressing timing, while the second warning light 42 has the key pressing timing as described above. It is good also as a structure which is made to light gradually by the light quantity Q1-Q4 from 2.75 beats before. Similarly, a configuration may be employed in which only the amount of light when the light is turned off is changed according to the elapsed time. Even when the amount of light from one of lighting to extinguishing and from extinguishing to lighting is changed in accordance with the elapsed time, it is possible to smoothly express how the timing to press the key approaches.

  In the above description, the LED is described as being lit with four light amounts of light amount Q1 to light amount Q4. However, the number of light amount levels is not limited. The number of light levels of the LED may be less than four, but the more the number, the more smoothly it can be expressed. Further, in the above description, it has been described that the indicator lamp that is lit in the period from 3 beats before the key pressing timing to the key pressing timing is lit with the same light amount during the period corresponding to 0.25 beats. Not. As described above, the light amount may not be changed stepwise, but the light amount may be continuously changed according to the elapsed time.

  Further, in the above description, it has been described that the change in the amount of light from turning on to turning off and from turning off to turning on is performed in the same way, but the present invention is not limited to this. For example, a configuration may be adopted in which the amount of light changes in three steps from turning on to turning off, while the amount of light changes in four steps from turning off to turning on.

  5-7, according to the embodiment, the time until key depression is expressed in more detail in a music including a note having a shorter length than the period during which one indicator lamp is lit. I explained that I can do it. According to the embodiment, it can be expressed in the same way even in a music piece including a decorative note.

  In the above description, the guide display 40 has been described as being composed of a transmissive sheet and LEDs, but is not limited thereto. For example, each of the first warning light 41 to the third warning light 43 and the key pressing instruction light 44 may be configured by a light emitting element such as an LED exposed from the housing 1a.

  Moreover, in the above, although LED was illustrated as a light emission means, it is not limited to this, For example, a fluorescent lamp etc. may be sufficient.

  Moreover, although the display color of the indicator lamp was illustrated above, the color is not limited. In the above description, the light quantity of the indicator lamp changes every 0.25 beat, but the time interval is not limited. Moreover, although the shape in the front view of the transparent sheet which comprises an indicator lamp was illustrated above, the shape is not limited.

  In the above description, the “music guide data” includes “guide display on” and “guide display off” in advance. However, the present invention is not limited to this. One or both of “guide display on” and “guide display off” may not be included in the music data. In this case, for example, when “guide display on” is not included, the reading unit 51 reads the time information and the event substantially simultaneously, and reads the “note on” data, the time information corresponding to “note on” The “note-on” command is output to the LED control unit 52 at a timing corresponding to three beats before, and the LED control unit 52 may be configured to light the first warning light 41 in response to this.

  Moreover, although the electronic keyboard musical instrument 1 was illustrated as a keyboard musical instrument in the above, it is not limited to this. As described above, since the guide display 40 is controlled separately from the sound generation according to the keyboard operation, it can be applied to an acoustic keyboard instrument such as an acoustic piano.

1 Electronic Keyboard Instrument 10 Keyboard 12 User Interface 16 CPU
40 Guide display 41 1st warning light 42 2nd warning light 43 3rd warning light 44 Key pressing instruction light 51 Reading part 52 LED control part

Claims (2)

The keyboard,
Three or more light emitting means corresponding to each key of the keyboard;
Control means,
The control means includes
Based on the performance information, prior to the timing to press the key, among the three or more light-emitting means that are turned off, the light-emitting means that is far from the keyboard is directed to the light-emitting means that is close to the distance. Then, by performing blinking in order, a switching process for switching the light emitting means to be lit is executed,
In the switching process,
A keyboard instrument characterized in that the light quantity of the light emitting means is changed according to the elapsed time in at least one of turning off the light emitting means and turning on the light emitting means. The control means in the switching process,
2. The keyboard instrument according to claim 1, wherein the keyboard instrument is turned off by decreasing the amount of light emitted from the light emitting means, and turned on by increasing the amount of light emitted from the light emitting means adjacent to the keyboard side of the light emitting means.

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